The automatic scavenging of the filter bags is regulated by an electronic control with adjustable pulse and pause time. The control unit is supplied in a plastic cabinet, protection class IP 65.

• The dust being separated inside the filter is continuously returned into the product stream, thus preventing a mixing of different types of dust.
• The spot filter delivers the cleaned air where the dust-laden air was removed. In this way, no pressure differentials will occur between the production rooms.
• The built-on fan, depending on the extent of leakiness automatically adjusts the amount of intake air.
• The large suction intake involves a very low admission speed, thus minimizing turbulence and dust circulation.
• In the event of a fire in a machine with built-on spot filter, the filter will not act as a connecting link to other machines.
• The spot filters are just as suitable for extension of existing central aspiration plants as they are for building up complete plants only based on spot filters.
• With spot filters, extensions incur no problems. New machines calling for dust aspiration are equipped with separate spot filters, thus avoiding interference into existing aspiration systems.